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DELTEC DELCOM-3222 RS-232C/RS-485
DELTEC DELCOM-3222 RS-232C/RS-485
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ALSTOM DEP232
ALSTOM DEP232

SAM ELECTRONICS DEM401

Product Name:​ DEM401 Digital Input Module (Gamma / NAVIS Marine System)
Manufacturer:​ SAM Electronics (STN Atlas Marine / Wärtsilä / Sperry Marine)
Product Category:​ Shipboard discrete signal acquisition module
Key Features:
  • 32 isolated digital inputs for dry contact or 24 VDC wet contact
Category:
Description
  • Optocoupler isolation per channel group
  • Backplane bus communication with SAM Electronics Gamma / UCS marine automation racks
  • LED per channel + module status/fault LED
Technical Specifications:
  • Input Channels:​ 32 (discrete ON/OFF)
  • Input Type:​ Dry contact or 24 VDC active (sinking/sourcing supported)
  • Logic High:​ 18–30 VDC; Logic Low: <5 VDC
  • Supply Voltage (module):​ 24 VDC ±20 %, typ. 210 mA
  • Power Consumption:​ ≤ 5 W
  • Isolation Voltage:​ ≥ 1500 VAC (field side to logic)
  • Response Time:​ ≤ 1 ms
  • Bus Interface:​ Proprietary SAM Electronics Gamma backplane bus
  • Indicators:​ 32 green channel LEDs + green PWR + red ERR
  • Operating Temp:​ -15 °C to +70 °C
  • Protection Rating:​ IP20 (cabinet mounted)
  • Certification:​ DNV, GL, LR, ABS (marine class society approved)
  • Mounting:​ Standard DIN rail or rack slot
  • Dimensions (approx.):​ 225 × 115 × 35 mm; Weight ~0.5 kg
Applications:
  • Ship engine room alarm & monitoring system (AMS)
  • Valve / pump / tank level switch status acquisition
  • Circuit breaker position feedback in marine switchboards
Installation Notes:
  • Use 0.5–1.5 mm² shielded cable for field wiring; ground shield at cabinet earth bar
  • Assign module address via DIP switch or software before inserting into live rack
  • Do not exceed max input voltage (typically 30 VDC)
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